"If I had to put a gauge on it percentage wise, I couldn't give you that right now," Thomas said. "My main thing is just I'm not 100 percent right now. The hardest thing about that is the being able to try to get back to that."

Thomas has played in two games since signing with the Colts before the 2013 season.

"At the end of the day, it's frustrating at times because nobody knows how I look 100 percent healthy," he said. "It's not an easy feeling to go through something like this, but at the same time, you have to deal with it and take it day by day and try to get back and hopefully when the dust settles show everybody what you can do."